title: 0.5 µJ pulses from a giant-chirp ytterbium fiber oscillator.
abstract: We present a mode-locked all-normal dispersion ytterbium fiber oscillator with output pulse energies beyond 0.5 µJ. The oscillator is mode-locked using nonlinear polarization rotation, and stable single-pulse operation is achieved by spectral filtering inside the resonator. The oscillator generates strongly chirped output pulses at a repetition rate of 4.3 MHz which can be compressed down to 760 fs.
authors.affiliation: Laser Zentrum Hannover e.V., Hollerithallee 8, 30419 Hannover, Germany. n.chichkov@lzh.de
authors.forename: Nikolai B
authors.initials: NB
authors.lastname: Chichkov
authors.forename: Christian
authors.initials: C
authors.lastname: Hapke
authors.forename: Katharina
authors.initials: K
authors.lastname: Hausmann
authors.forename: Thomas
authors.initials: T
authors.lastname: Theeg
authors.forename: Dieter
authors.initials: D
authors.lastname: Wandt
authors.forename: Uwe
authors.initials: U
authors.lastname: Morgner
authors.forename: Jörg
authors.initials: J
authors.lastname: Neumann
authors.forename: Dietmar
authors.initials: D
authors.lastname: Kracht